Sel 551 - Page 259

G.23
Date Code 20110408 Instruction Manual SEL-551 Relay
Modbus RTU Communications Protocol
Modbus RTU Communications Protocol
008E Row 13
Bit 0 = 1 if any of
bits 8–15 are set
to 1
Bit 0 = 0 if all of
bits 8–15 are set
to 0
Bits 1–7 = 0
Bit 8 = 0
Bit 9 = 0
Bit 10 = 0
Bit 11 = TRGTR
Bit 12 = QDEM
Bit 13 = GDEM
Bit 14 = NDEM
Bit 15 = PDEM
Commands (see Note 5)
0090 (W) Command Code 1 12
0091 (W) Parameter 1
0092 (W) Parameter 2
0093–009F Reserved
History Records
00A0 Number of History
Records
b
12011
00A1 (RW) History Selection
b
12011
00A2 Event Time
b
millisec 0 999 1 1
00A3
b
ss 0 59 1 1
00A4
b
mm 0 59 1 1
00A5
b
hh 0 23 1 1
00A6 Event Date
b
dd 1 31 1 1
00A7
b
mm 1 12 1 1
00A8
b
yyyy 1992 2999 1 1
00A9 Event Type
a
ASCII
string
00AA see Note 3
00AB
00AC
00AD Shot 0 4 1 1
00AE Maximum phase
current
0 65535 1 1
00AF Targets
Table G.18 Modbus Map (Sheet 11 of 15)
Address
(Hex)
Field Units
Range
Scale
Factor
Low High Step